I want to go from a 205/40/17 to a 215/40/17 on my racing hart c5's but do you guys think that a 215 would be too wide for that wheel in so far that it has sidewall crush from being on too skinny of a rim? Thanks

 

If you were looking at a sidewall spec of 50% or 55% you just might get by. But putting a 215mm (8.464") (8.72"cross section)/40 on a 7.0" rim may tuck the sidewall too much. The sidewall will have no protection, and will pinch and most likely split if you hit a curb or pothole.

The 205mm (8.070") is more reasonable.

P

 

I'm confused. I'm running 205/40's on my gf accord right now and we hate it. The sidewall is too thin and the tire looks like it's stretching to fit the rim thus offering no protection what so ever to her rims. I was under the impression that 215's would be better, although we're thinking 215/45's not 40's. With 215/45's we should be ok no?

 

Whatever tire/rim combo is chosen, what you're looking for is to avoid just one thing.
You don't want the Sidewall to be neither drawn in or expanded from it's static dimension. You don't want to deviate from the shape it was molded in. A quick way to match rims/tires?, with the tire laying on the floor, measure from outer bead surface to outer bead surface. That will give you the dimension for the rim width bead to bead.

If a tire is grossly wider than the rim it's mounted to, The tire will quickly wear in the center of the tread area at the recommended tire pressure because the tread tends to crown as the sidewalls are pulled in. This effect gets worst as the aspect ratio drops.
Conversely
If a tire is narrower than the rim it's mounted to, the tire will exhibit accelerated wear in the shoulder area because the tread has a tendency to collapse as the side wall is spread out to meet the rim. This effect gets worst as the aspect ratio drops.

Ride quality will improve as the aspect ration approaches 50/55%. The cars' suspension has always been designed with consideration to the sidewalls damping qualities.

P

 

215/45s on a 17 x 7 wheel are just fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by uncle_el &raquo;</TD></TR><TR><TD CLASS="quote">215/45s on a 17 x 7 wheel are just fine.

</TD></TR></TABLE>

yupyup, juss do some fender rollin and u'll be fine...215/40 would be lil risky cuz u might bend ur rim if u hit somethin hard, not to mention a bumpy ride, 215/45 would be good

 

205 45 17 is perfect, yes you could go to 215 if your car is not slammed or it will rub under roll or full lock.

40 is a tad too skinny, i am running 40 in front and i wish i have 45.

do notice tho, most newer tires have a curb protection ridge that rise up, it's gonna run into more clearance problem if you are slammed.

 

wow this thread is full of misinfo

for 17x7 u need 205/40/17

for 17x7.5 u need 215/40/17

if u look at ur 17x7 tire it says " do not mount 7.5 in. wide tires"

so dont mount 7.5 in wide tires on a 7 in. wide rim.

/thread

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shutupnskate &raquo;</TD></TR><TR><TD CLASS="quote">wow this thread is full of misinfo

for 17x7 u need 205/40/17

for 17x7.5 u need 215/40/17

if u look at ur 17x7 tire it says " do not mount 7.5 in. wide tires"

so dont mount 7.5 in wide tires on a 7 in. wide rim.

/thread
</TD></TR></TABLE>

first off, you are wrong, you can mount 215 on 7inch wide wheel, it's been done and it's not something rare.

there's no such thing as 17x7 tire, 17x7 is a measurement for the wheel.

 

My point (if anyone were to refer to my prior post) is that mounting an 8.5" tire (215mm) with an aspect ratio of 40 on a 7" rim will pinch the sidewalls and cause accelerated wear in the tread center section.
If you go to a greater aspect ratio (50 or 55) the effect will not be as great; and the 215 will work better. Ideally, the rim should be as close to 7.5" as you can get. I pointed out that the 205 was a better fit on a 7" rim.

P

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P_Adams &raquo;</TD></TR><TR><TD CLASS="quote">My point (if anyone were to refer to my prior post) is that mounting an 8.5" tire (215mm) with an aspect ratio of 40 on a 7" rim will pinch the sidewalls and cause accelerated wear in the tread center section.
If you go to a greater aspect ratio (50 or 55) the effect will not be as great; and the 215 will work better. Ideally, the rim should be as close to 7.5" as you can get. I pointed out that the 205 was a better fit on a 7" rim.

P</TD></TR></TABLE>

agree totally, I am running 205 myself but mr.shutupnskate needs to realize that 215 "could" be mount on 7"

Edit: and in fact honda mount 215 45 17 on their new SI which wears a 17x7


Modified by iam7head at 11:52 AM 1/4/2006

 

I'm dropped on Neuspeed sports and Koni red's so I think I'm gonna rub with 215's but I don't like how 205's look like they're stretchin on the rims. I'm pretty sure that my rims are 17x7 and with the drop I guess I'll be rubbing. Crap this sucks. In NYC the 205/40's are causin havoc on the ride, having to drive around like one of those ricers with cut springs.

 

so to sum up, if i do go ahead with the 215 will it be so fat on the wheel that ill lose perfomance from the sidewall not being as stiff as it would be with the 205. My main thing is, is that I want more grip but not if the 215's sidewall will be compromised.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Knightmare69 &raquo;</TD></TR><TR><TD CLASS="quote">I'm dropped on Neuspeed sports and Koni red's so I think I'm gonna rub with 215's but I don't like how 205's look like they're stretchin on the rims. I'm pretty sure that my rims are 17x7 and with the drop I guess I'll be rubbing. Crap this sucks. In NYC the 205/40's are causin havoc on the ride, having to drive around like one of those ricers with cut springs. </TD></TR></TABLE>

i had neuspeed sports with koni yellows, 17x7 wheel, with a 215/45 tire. no probs.

http://img.photobucket.com/alb...o.jpg
http://img.photobucket.com/alb...p.jpg

not a 5th gen accord, but suspensions of 4th and 5th gen accords are very close. again, i never had any problems with a 215/45 tire on a 7 inch wide wheel. at one point i had toyo proxe fz4s, and another i had kumho ecsta 711s (may have been 712s)- the only reason i mention that is that some people feel that tire sizes are not consistent from manufacturer to manufacturer (one's may be closer to 210, whereas another closer to 215, whereas another closer to 220- but all labeled as 215/45).

best of luck.

 

Thanks for the pics, the second one really helped showing me and my gf what a difference between the tire sizes. My only concern is rubbing and while yes, the suspension of the 4th and 5th gen are closely related, the body panels are not and that's my main concern.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Knightmare69 &raquo;</TD></TR><TR><TD CLASS="quote">Thanks for the pics, the second one really helped showing me and my gf what a difference between the tire sizes. My only concern is rubbing and while yes, the suspension of the 4th and 5th gen are closely related, the body panels are not and that's my main concern.</TD></TR></TABLE>

here's a thread on another site comparing 205/40 vs 215/45, it's 4th gen accords, not 5th gen though.

 

i have 225 40 18's on a 7.5" rim it sits flush and tooks great absolutley no problems at all after 30k miles i wouldnt ever change the tire width with these

so 225 fits very good on a 7.5 in rim i think its perfect

 

I've got 215-45-17s on my 17x7 and it is perfect. I was gonna go to 225-45 but didnt want to roll the fenders, even still it will fit just fine on the tire.

 

I am on eibach sportlines so I think 215/40/17 would be nice, cause should that sidewall be fatter since 40 of 215 is more than 40 of 205?

 

u guys must be confused...
215= 7.5 in wide rim
205= 7 in wide rim
225= 8 in wide?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shutupnskate &raquo;</TD></TR><TR><TD CLASS="quote">u guys must be confused...
215= 7.5 in wide rim
205= 7 in wide rim
225= 8 in wide?</TD></TR></TABLE>

hey, honda put a 215 on thier new civic si which wears a 17x7(that's seven not seven and a half)

215 CAN be mounted on 7inch tire, could you just stop think you know everything automotive?

 

215/45's are what i run on my 96 accord and they do me just fine...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 972drcordex &raquo;</TD></TR><TR><TD CLASS="quote">I want to go from a 205/40/17 to a 215/40/17 on my racing hart c5's but do you guys think that a 215 would be too wide for that wheel in so far that it has sidewall crush from being on too skinny of a rim? Thanks</TD></TR></TABLE>
If you're specifically asking about whether a 215 is too wide for a 7" wheel, then the answer is no, it's not.

Many modern Hondas come with 215-section tyres on 17x7 wheels, including my own car.

There might be a manufacturer who makes a 215 that the manufacturer would prefer to have on a 7.5" wheel, but that would be because of a specific design parameter of that particular tyre design.

Most 215's would be rated for 7" wheels.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">
If you're specifically asking about whether a 215 is too wide for a 7" wheel, then the answer is no, it's not.

Many modern Hondas come with 215-section tyres on 17x7 wheels, including my own car.

There might be a manufacturer who makes a 215 that the manufacturer would prefer to have on a 7.5" wheel, but that would be because of a specific design parameter of that particular tyre design.

Most 215's would be rated for 7" wheels.</TD></TR></TABLE>

 

I would go with the 205/45/17 that Mazda uses on their stock trim models. That size is used on the new miatas and most miata owners ditch the tires...they are Potenzas and are nice...I have them mounted on my 17x7 rims. No scraps, rubs, or nothing abnormal....